The bases on Okinawa put the United States Armed Forces only 350 miles from Japan's home islands.

Most facilities closed after the war, but some are still in use today by all branches of the United States Armed Forces.

The other high priorities for the Construction brigades were fresh water and the repair and expansion of the airfields on Okinawa, once they were captured.

Construction brigades worked in shifts around the clock, due to the high priorities of these tasks.

Seabee 43rd Naval Construction Regiment landed with the troop on the east coast of Okinawa.

Seabees built their own loading zone for the heavy equipment needed for road work and runway repair and improvement.

On April 28, Seabee started construction of new runway that could handle the needs of Bombers at Yontan Airfield.

Due to poor drainage at Awase Airfield, the captured runway was abandoned, for later work.

Seabee 36th Battalion began building a new 5,000-foot fighter aircraft runway nearby to Awase starting on April 23.

On the Katsuren Peninsula at Katchin Hanto Seabees of the 7th Battalion started work on a seaplane base, that opened on July 1.

[5] For unloading all the needed cargo harbor facilities at Katchin Hanto, Tengan and Baten Ko at Buckner Bay were built.

[3] On June 1, 1945, the original Seabees Battalion were given a break as replacements arrived and took over unloading the massive amount of cargo still needed for operation.

Seabee built degaussing station at Tsuken Shima, and a joint Headquarter communications center.

[6] The Okinawa Bases were building up for the planned, more costly, invasion of Japan home island, called Operation Downfall.

These projects included a full naval base at Baten Ko, camp for receiving troops at Kuba Saki, camp for outgoing troops, new ammunition depot, Fleet Hospital #116, a small naval base at Katchin Hanto, full aviation supply depot, making a deep harbor at Baten Ko, building a fleet recreation area at Tsuken Shima, and enlarging the naval supply depot at Tengan on Chimu Wan.

Typhoon Louise did massive damage to the fleet post office at Baten Ko, departure camp, and Special Augmented Hospital No.

[8] United States Military Government of the Ryukyu Islands was set up during the battle in 1945 for Administrative control.

[13][14][15] Japanese governments has allowed US bases on Okinawa in exchange for a US commitment to defend Japan from external attacks, called The U.S.-Japan Security Alliance.

The loss of the three Victory ships, each sunk by a kamikaze attack severely hurt the combat forces on Okinawa.

The ships were carrying a total of 24,000 tons (54 million pounds) of ammunition; including most of the 81 mm mortar shells needed for the troops.